Home / 18,920.40-28,386.68-5,774.10

Finding the Fourth Proportional to 18,920.40, 28,386.68 and 5,774.10

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Solution

The fourth proportional to 18,920.40, 28,386.68 and 5,774.10 is: 8,663.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,920.40 : 28,386.68 = 5,774.10 : x
  2. Step 2: Convert to fraction form
    18,920.40/28,386.68 = 5,774.10/x
  3. Step 3: Cross multiply
    18,920.40x = 28,386.68 × 5,774.10
  4. Step 4: Simplify right side
    18,920.40x = 163,907,500.12
  5. Step 5: Solve for x
    x = 163,907,500.12/18,920.40
  6. Step 6: Final answer
    x = 8,663.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.